Mathematics · Time and Work
If A alone can complete a work in 30 days and B alone can complete the same work in 60 days, then which of the following is/are correct? I. Respective ratio of efficiency of A and B is 1 : 2. II. Working together, A and B can complete the same work in 20 days.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Neither I nor II
- 2Only II✓
- 3Only I
- 4Both I and II
Correct answer
Only II
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